package com.zyajac.springBootDemo.dao.Redis;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.serializer.SerializerFeature;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.SerializationException;

import java.nio.charset.Charset;


/**
  * 使用fast json 序列化工具
  * @author LZG
  * @date  2019/8/12
  **/
public class FastJsonRedisSerializer<T> implements RedisSerializer<T>{


    public static final Charset DEFAULT_CHARSET = Charset.forName("UTF-8");

    private Class<T>  clazz;

    public FastJsonRedisSerializer(Class<T> clazz) {
        super();
        this.clazz = clazz;
    }

    //序列化
    @Override
    public byte[] serialize(T t) throws SerializationException {
        if(t == null) return new byte[0];

        return JSON.toJSONString(t , SerializerFeature.WriteClassName).getBytes(DEFAULT_CHARSET);
    }


    //反序列化
    @Override
    public T deserialize(byte[] bytes) throws SerializationException {
        if(bytes == null || bytes.length <= 0) return null;

        String str = new String(bytes, DEFAULT_CHARSET);

        return JSON.parseObject(str , clazz);
    }
}
